EDIT: They actually have it on sale from $1,600 to now $1,299 if you probably wait till end of year or so with other competitors or more stuff coming out for the F30 you can get this fro under 1k, imo. Lets see...

Would this tune void the warranty? I use to think quad was overkill but starting to change my mind.

I know that this says that the Kellener tuner box works differently than, say the BMS/JBD diesel box does. Could someone rephrase this, describing exactly how they work differently? I do understand that the BMS works by tricking the ECU into supplying more fuel to the pistons while creating problems downstream with DPF and higher emissions, and possibly with other engine parts. Is the Kelleher box kinder and gentler?

Quote:

The tuning principle for diesel engines:

Kelleners Sport additional engine control units for increasing power mainly influence the main injection time. The pre-injection and post-injection times are not affected because this would lead to a rough running. Consequently, the rail pressure remains unchanged when a Kelleners Sport additional engine control unit is fitted because increasing it would result in larger amounts of fuel being injected during the pre-injection and post-injection phases. Moreover, this would also increase the load on the fuel system, something that does not occur when a Kelleners Sport additional engine control unit is fitted.

Read the warranty information summary on that page...the power warranty is only good for 24 months post-purchase regardless of when you get the upgrade. The example they give: If you get the upgrade 10 months post-purchase, the warranty is good for the remaining 14 months. If you buy the upgrade 23 months post-purchase the warranty is good for exactly one month.

BTW, I've got the Kelleners Sport front lip spoiler and trunk spoiler on my red 328d. There should be more pics in my garage